You can't use a tool with a sore thumb: avoid accidents!

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Courtesy of UC Berkeley, Bancroft Library

http://www.oac.cdlib.org/ark:/28722/bk0007s8v25/?order=1

Title:

You can't use a tool with a sore thumb: avoid accidents!

Creator/Contributor:

Dwig, artist

Date:

[1941-1945]

Contributing Institution:

UC Berkeley, Bancroft Library